It’s no secret that celebrities take a beating on Twitter at the hands of merciless naysayers, and “Jimmy Kimmel Live” debuted a special ‘music edition’ of the crowd favorite “Mean Tweets” segment last night (October 9).

They’re both fairly outspoken regarding their political views, and Kid Rock and Sean Penn teamed up for a new short film titled “Americans” where they put aside their differences.

At the outset, Penn finds himself in a bar watching Rock perform at a Mitt Romney rally on television. And once he asks the bartender to change the channel to see President Barack Obama dancing with Ellen DeGeneres, Kid shows up to object.